Physics for Scientists and Engineers with Modern Physics
Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN: 9781337553292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 34, Problem 39AP

(a)

To determine

The time taken by the light to reach the earth surface from the atmosphere at the distance of 100km .

(b)

To determine

The percentage increase in time when the light travels in the absence of Earth’s atmosphere.

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Light traveling through an optical fiber (n=1.44) reaches the end of the fiber and exits into air. (a) If the angle of incidence on the end of the fiber is 30°, what is the angle of refraction outside the fiber? (b) How would your answer be different if the angle of incidence were 50°? (c) What would be the speed of the light in optical fiber? (d) What would be the angle of refraction outside the fiber into water(refraction index n water = 1.33)?
A light ray enters the atmosphere of the Earth and descends vertically to the surface a distance h = 100 km below. The index of refraction where the light enters the atmosphere is 1.00, and it increases linearly with distance to have the value n = 1.000 293 at the Earth’s surface. (a) Over what time interval does the light traverse this path? (b) By what percentage is the time interval larger than that required in the absence of the Earth’s atmosphere?
A ray of light crosses the boundary between some substance with n = 1.46 and air, going from the substance into air. If the angle of incidence is 26◦ what is the angle of refraction?

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Physics for Scientists and Engineers with Modern Physics

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